US PATENT SUBCLASS 416 / 52
.~.~ Centrifugal mass coaxial with impeller

Current as of: June, 1999
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416 /   HD   FLUID REACTION SURFACES (I.E., IMPELLERS)

31  DF  WITH CONTROL MEANS RESPONSIVE TO NON-CYCLIC CONDITION SENSING, CENTRIFUGAL ACTUATION, TORQUE OR THRUST {9}
44  DF  .~ Impeller rotation speed responsive {6}
52.~.~ Centrifugal mass coaxial with impeller {1}
53  DF  .~.~.~> Pivot axis parallel to rotation axis

DEFINITION

Classification: 416/52

(under subclass 44) Apparatus wherein the control means which acts on the apparatus part comprises a mass which is caused to rotate in a varying radius dependent upon the speed of rotation about an axis coincident with the rotation axis of the shaft which supports and drives or is driven by the impeller.